.page-news {
  --news-gap: clamp(52px, 7vw, 104px);
  --news-warn-tint: rgba(255, 107, 53, .09);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

.page-news .news-shell {
  padding-bottom: clamp(64px, 9vw, 128px);
}

.page-news :focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.page-news .news-breadcrumbs {
  margin: 4px 0 22px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  display: grid;
  gap: 30px;
  margin-top: 8px;
}

.page-news .news-hero__title {
  margin: 10px 0 18px;
  font-size: clamp(34px, 5.2vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 14em;
}

.page-news .news-hero__lede {
  max-width: 32em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  margin: 0;
}

.page-news .news-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

.page-news .news-stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-news .news-stat__num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.page-news .news-stat__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--graphite);
}

.page-news .news-pick {
  background: var(--teal);
  color: var(--paper);
  border-radius: var(--r-xl);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--shadow-2);
}

.page-news .news-pick .eyebrow {
  color: var(--focus);
}

.page-news .news-pick__title {
  margin: 8px 0 16px;
  font-size: clamp(19px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-news .news-pick__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-pick__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 12px 0;
  border-top: 1px solid rgba(245, 241, 232, .24);
}

.page-news .news-pick__key {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--focus);
  padding-top: 3px;
}

.page-news .news-pick__name {
  font-size: 15px;
  font-weight: 800;
  color: var(--paper);
}

.page-news .news-pick__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 241, 232, .82);
}

/* ---------- 置顶公告 ---------- */
.page-news .news-pin {
  margin: 44px 0 0;
  background: var(--news-warn-tint);
  border: 1px solid rgba(255, 107, 53, .34);
  border-left: 4px solid var(--orange);
  border-radius: var(--r-lg);
  padding: clamp(16px, 2.4vw, 26px);
  box-shadow: var(--shadow-1);
}

.page-news .news-pin__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  cursor: pointer;
  list-style: none;
}

.page-news .news-pin__summary::-webkit-details-marker {
  display: none;
}

.page-news .news-pin__summary::marker {
  content: "";
}

.page-news .news-pin__title {
  flex: 1 1 220px;
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-news .news-pin__time {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--graphite);
}

.page-news .news-pin__chev {
  width: 9px;
  height: 9px;
  margin-right: 6px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg);
  transition: transform 160ms ease-out;
}

.page-news .news-pin[open] .news-pin__chev {
  transform: rotate(45deg);
}

.page-news .news-pin__body {
  display: grid;
  gap: 24px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed rgba(255, 107, 53, .48);
}

.page-news .news-pin__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-news .news-pin__list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 4px 12px;
  font-size: 15px;
  line-height: 1.7;
}

.page-news .news-pin__key {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--wine);
  padding-top: 3px;
}

.page-news .news-pin__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 20px 0 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--graphite);
}

.page-news .news-pin__links .link {
  color: var(--blue);
}

/* ---------- 章节头 ---------- */
.page-news .news-section {
  margin-top: var(--news-gap);
}

.page-news .news-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  margin-bottom: 24px;
}

.page-news .news-head .section-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

.page-news .news-head .section-head__title {
  margin: 0;
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-news .news-head .section-head__meta {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- 栏目标签 ---------- */
.page-news .news-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .news-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1.5px solid var(--teal);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--teal);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 160ms ease-out, color 160ms ease-out, border-color 160ms ease-out, transform 160ms ease-out;
}

.page-news .news-tab:hover {
  transform: translateY(-2px);
}

.page-news .news-tab[aria-selected="true"] {
  background: var(--teal);
  color: var(--paper);
}

.page-news .news-tab__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  opacity: .78;
}

.page-news .tab-panel[hidden] {
  display: none;
}

/* ---------- 条目索引表 ---------- */
.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-news .news-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 24px;
  grid-template-areas: "num title arrow" "num meta arrow";
  align-items: center;
  column-gap: 14px;
  row-gap: 3px;
  padding: 15px 6px;
  border-bottom: 1px solid var(--rule);
  transition: transform 160ms ease-out, background-color 160ms ease-out;
}

.page-news .news-row .index-row__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--graphite);
}

.page-news .news-row .index-row__title {
  grid-area: title;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  transition: color 160ms ease-out;
}

.page-news .news-row .index-row__meta {
  grid-area: meta;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--graphite);
}

.page-news .news-row .arrow {
  grid-area: arrow;
  justify-self: end;
  color: var(--blue);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 160ms ease-out, transform 160ms ease-out;
}

.page-news .news-row:hover {
  transform: translateX(4px);
  background: var(--paper-2);
}

.page-news .news-row:hover .index-row__title {
  color: var(--blue);
}

.page-news .news-row:hover .arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 图片 ---------- */
.page-news .news-figure {
  margin: 0;
}

.page-news .news-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--rule);
  object-fit: cover;
}

.page-news .news-figure figcaption {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-news .news-figure--wide {
  margin-bottom: 28px;
}

.page-news .news-figure--wide img {
  aspect-ratio: 1000 / 560;
}

.page-news .news-pin__figure img {
  aspect-ratio: 960 / 620;
}

.page-news .news-figure--square img {
  aspect-ratio: 1 / 1;
}

/* ---------- 方法笔记分栏 ---------- */
.page-news .news-split {
  display: grid;
  gap: 26px;
}

/* ---------- 更新节奏 ---------- */
.page-news .news-rhythm {
  margin-top: var(--news-gap);
  padding: clamp(22px, 3.4vw, 44px);
  background: var(--paper-2);
  border-top: 4px solid var(--teal);
  border-radius: var(--r-xl);
}

.page-news .news-rhythm .section-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

.page-news .news-rhythm__title {
  margin: 8px 0 14px;
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-news .news-rhythm__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  max-width: 34em;
}

.page-news .news-rhythm__facts {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-news .news-rhythm__facts li {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 6px 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
  font-size: 15px;
  line-height: 1.7;
}

.page-news .news-rhythm__k {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--teal);
  padding-top: 3px;
}

.page-news .news-sub {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 16px 18px;
  background: var(--paper-3);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
}

.page-news .news-sub__label {
  flex: 1 1 100%;
  font-size: 14px;
  font-weight: 700;
  color: var(--graphite);
}

.page-news .news-sub__mail {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--ink);
  word-break: break-all;
}

.page-news .news-sub .btn[data-copied] {
  background: var(--green);
  border-color: var(--green);
  color: var(--paper);
}

.page-news .news-rhythm__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- 出口目录 ---------- */
.page-news .news-exit {
  margin-top: var(--news-gap);
  padding-top: 32px;
  border-top: 1px solid var(--rule);
}

.page-news .news-exit__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .news-exit__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 4px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: color 160ms ease-out, transform 160ms ease-out;
}

.page-news .news-exit__link .arrow {
  color: var(--blue);
}

.page-news .news-exit__link:hover {
  color: var(--blue);
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-news .news-row {
    grid-template-columns: 90px minmax(0, 1fr) 170px 26px;
    grid-template-areas: "num title meta arrow";
    row-gap: 0;
    padding: 18px 8px;
  }

  .page-news .news-row .index-row__title {
    font-size: 17px;
  }

  .page-news .news-row .index-row__meta {
    text-align: right;
  }

  .page-news .news-row .index-row__num {
    font-size: 13px;
  }
}

@media (min-width: 900px) {
  .page-news .news-pin__body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 48px);
    align-items: start;
  }

  .page-news .news-rhythm__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(300px, .9fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
    margin-top: 18px;
  }
}

@media (min-width: 980px) {
  .page-news .news-split {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
}

@media (min-width: 1020px) {
  .page-news .news-exit__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 36px;
  }
}

@media (min-width: 1180px) {
  .page-news .news-pin {
    margin-right: -96px;
  }
}

@media (hover: none) {
  .page-news .news-row .arrow {
    opacity: .5;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-row,
  .page-news .news-row .arrow,
  .page-news .news-row .index-row__title,
  .page-news .news-tab,
  .page-news .news-pin__chev,
  .page-news .news-exit__link,
  .page-news .news-exit__link .arrow {
    transition-property: opacity, background-color, color;
    transform: none;
  }

  .page-news .news-row:hover,
  .page-news .news-exit__link:hover {
    transform: none;
  }
}